Exhaust Manifold / Catalytic Converter
Exhaust manifold/CCC (C lose C oupled C atalyst) and front exhaust pipe/catalytic converter for engine are improved with regards to weight and efficiency. Heat shield plates are modified.
Manifold with catalytic converter
The catalytic converter's cross-section is changed from oval to round, which means better contact pattern of the exhaust flow against the catalytic converter's substrate. This means that the amount of precious metals in the coating on the catalytic converter can be reduced at the same time as the emission standards are fulfilled. In addition to a great cost-saving, reducing the need for precious metals also results in less environmental impact.
The outlet flange is changed from a thickness of 8 mm with threaded holes (x4) to a 4 mm thick plate with press bolts (x4). This gives weight and cost-savings. Gaskets are changed to 1.2 mm flat gaskets.
Downpipe/Catalytic converter
The catalytic converter's inlet flange is also changed from 8 mm to 4 mm thick, which gives a weight and cost-saving. The bellows is more flexible which gives less noise from resonance and vibrations as well as longer service life. Also, the rear catalytic converters have a reduced amount of precious metals in the substrate's coating at the same time as the emission standards still are fulfilled, which gives another big cost-saving.